Familiar Winter Magic by Jeffe Kennedy

It’s holiday time at Convocation Academy, but best friends Han and Iliana are finding it hard to celebrate. As a familiar, Iliana is facing her assignment to a life of servitude to a wizard, very soon. And Han… despite being tested by the oracle daily, he is still uncategorized. As Iliana and Han face being separated forever, they at last find the courage—or desperation—to break the rules and acknowledge their deeper feelings for each other. But it will take more than true love to save them from the laws of the Convocation…